ReadFast vs Speed Read by YComplex
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ReadFast
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ReadFast helps you read faster using RSVP (Rapid Serial Visual Presentation) — a proven technique that displays text word-by-word at your chosen speed, with an optical recognition point to guide your focus. IMPORT YOUR CONTENT • Upload PDFs, Word documents, EPUBs, and text files • Add articles from RSS feeds • Connect to Readwise Reader to sync your reading list • Paste or type text directly READ AT YOUR SPEED • Adjustable words-per-minute (WPM) for any reading level • Play, pause, and scrub through documents with intuitive controls • Tap and swipe gestures for hands-free reading • Track your progress with visual indicators and time estimates MARK & REVIEW • Double-tap to mark important passages while reading • Review all your marks with surrounding context • Add notes to any marked section • Never lose track of key insights ORGANIZE YOUR LIBRARY • Create readlists to group related documents • Search, filter, and sort your library • Continue reading from where you left off • Auto-archive completed documents CUSTOMIZE YOUR EXPERIENCE • Dark, Light, and Sepia themes • Multiple font options and sizes • Choose your ORP highlight color • Set reading reminders to build your habit SYNC ACROSS DEVICES • Sign in with Apple or Google • Your library, progress, and marks sync automatically • Read on iPhone, iPad, or switch between them seamlessly READFAST PRO Upgrade to Pro for unlimited documents, unlimited readlists, cloud sync, and priority support. Whether you're tackling research papers, news articles, or that book you've been meaning to finish — ReadFast helps yo get through more in less time. Start reading smarter today. Terms of Use: https://readfast.io/terms Privacy Policy: https://readfast.io/privacy
Speed Read by YComplex
This app helps you read faster by displaying words one at a time using Rapid Serial Visual Presentation. It trains your eyes to stay focused and reduces subvocalization. Import your own content or read web articles directly within the app.
- RSVP reader with focal letter highlighting
- Adjustable reading speed (50-1000 WPM)
- Import EPUB, PDF, TXT, Markdown
- Read web articles via URL
- Chapter navigation
- Customizable fonts and dark theme
- On-device library
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Speed Read uses RSVP (Rapid Serial Visual Presentation) to help you read faster. Words are displayed one at a time with a highlighted focal letter, training your eyes to stay centered and eliminating subvocalization — the habit that slows most readers down. Import your own books, articles, and documents in EPUB, PDF, TXT, or Markdown format. Paste any web URL and the app extracts the article text automatically. Your entire library lives on-device. Features: - RSVP reader with a color-highlighted focal letter for each word - Adjustable speed from 50 to 1,000 words per minute - Two play modes: Play/Pause or Press to Play (hold to read, release to stop) - Chapter navigation for multi-chapter EPUBs - Import documents: EPUB, PDF, TXT, and Markdown files - Read web articles by pasting a URL - 7 monospace font choices including JetBrains Mono, Fira Code, and Courier Prime - Adjustable font size - Reading position saved automatically — pick up where you left off - Pure black dark theme designed for OLED screens - No account required. All data stays on your device.
Screenshots
Verdict
The clearest difference is in-app purchases: Speed Read by YComplex at none against ReadFast's 3. Speed Read by YComplex also leads on ads (none vs shown). On price, device support and iOS requirement there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. ReadFast sells 3 in-app purchases, starting at $7.99 per month. Speed Read by YComplex asks for nothing beyond the download.
| Parameter | ReadFast | Speed Read by YComplex |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Number of ratings | — | 1 — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | — | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.1 | 15.1 |
| Further details — not scored | ||
| Size | 38 MB | 48 MB |
| Age rating | 4+ | 4+ |
| Developer | Bjorn Gunnarsson | YComplex Ltd |
In-app purchases
ReadFast
- ReadFast Pro Monthly$7.991 Month
- ReadFast Pro Yearly$59.991 Year
- ReadFast Pro Lifetime$179.99
Speed Read by YComplex
No in-app purchases







